Automatic fuel-feed.



E. G. OFELDT. AUTOMATIC FUEL FEED.

APPLICATION nun APR. 22, 1901.

Patented Nov. 24, 1908.

WITNESSES W K W INVENTOR UNITED OFFICE.

ERNEST G. OFELDT, OF NYAOK, NEW YORK.

AUTOMATIC FUEL-FEED.

To all whom it may concern:

Be it known that I, ERNEST Gr. OFELDT, of Nyack, in the county ofRockland and State of New York, have invented certain new and usefulImprovements in Automatic Fuel- Feeds; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others ski] led in the art to which it appertains tomake and use the same.

My invention relates to an improved automatic liquid feeding deviceadapted for use in feeding liquid fuel or liquids under pressure to afurnace or for other purposes,the object of the invention being toprovide simple and eflicient means whereby the liquid can be storedunder a predetermined pressure and to so construct the device that thepressure under which it may be desired to feed the liquid can beregulated and controlled and so that a greater pressure than may bedesired will be prevented.

\Vith this object in view the invention consists in certain novelfeatures in construction and combinations and arrangements of parts ashereinafter set forth and pointed out in the claim.

The accompanying drawing is a sectional view illustrating myimprovements.

1 represents a cylinder having a closed bottom 2 and provided with ahead 3 having an internally threaded boss& for the passage of a screw 5and said boss 4 is threaded eX ternally for the accommodation of astuffing box (3. The lower end of the screw 5 is secured to a piston 7in the cylinder 1, said piston being provided with a depending an nularflange 8. Below the piston 7 a piston 9 is located and provided with anupwardly projecting peripheral flange 10. Between these pistons a coiledspring 11 is located and the tension of this spring can be regulated bymeans of the screw 5 for increasing or diminishing pressure upon liquidswhich may be within the cylinder between the bottom 2 thereof and thepiston 9.

The bottom 2 of the cylinder is provided with an inlet opening 12, withwhich a nipple 13 communicates,said nipple being Specification ofLetters Patent.

Application filed April 22, 1907.

Patented Nov. 24, 1908.

Serial No. 369,552.

adapted for the reception of a pipe from a suitable liquid supply. Thebottom 2 of the cylinder is also provided with an outlet opening letwith which a nipple l5 con'u'i'lunicates, and this nipple is intended toreceive a. pipe leading to the place of consumption of the liquid. Thecylinder 1 is provided at a point approximately midway between its endswith an outlet or overflow nipple 1G and this nipple may, if desired, beconnected with the source of liquid supply. An outlet 17 is made in thehead 3 of the cylinder for the escape of any liquid which may find itsway past the piston S.

In operating the device, liquid fuel will be forced into the cylinder 1by means of any suitable pump connected with the nipple 13 and a sourceof supply, thus causing the piston 9 to rise against the resistance ofthe spring 11. The liquid fuel will flow from the cylinder through theoutlet 14 and will be conveyed to the burner by means of a suitable pipeconnected with the nipple 15. If, during the operation of the device,the burner does not take all the fuel being fed to it, the piston 9 willrise sutliciently to uncover the outlet afforded by the nipple 16, andthe excess of fluid will be permitted to flow back to the source ofsupply through a suitable pipe connected with said nipple 16.

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent is,

In a device of the character described, the combination with a cylinderhaving an inlet and also an outlet at one end and having an overflowoutlet between its ends, of a piston located within said cylinderbetween said overflow outlet and the end of the cylinder having theinlet and outlet openings, spring pressing against said piston and meansfor regulatlng the tenslon of sald spring.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

ERNEST G. OFELDT. WVitnesses:

HAROLD T. EATON, IRVING HOPPER.

